Cutting-tool.



PATENTED JUNE 18, 1907.

S. V. HUBER.

CUTTING TOOL.

APPLICATION 11.31) MAR.5.1907.

2 SHEETS-SHEET 1.

FIE-1-1 F lNVENTO R m 6 PATENTED JUNE 18, 1907.

8. v. HUBER.

CUTTING TOOL.

APPLICATION FILED MAB.5.1907.

2 SHEETS-SHEET 2- I 4 INVENTOR 4 '/fw'z m 6 SIGMUND v. nUBEa oF PITTSBURG, PENNSYLVAN A.

CUTTING-TOOL.

Specification of Iiette rs Patent. I

. Application filed March 6,1907. Berill N-.860,7 35.

. Patented June is, 1907.

To wllwhom it may concern) Be it known that I, SIGMUND V. HUBER,

- residing at Pittsburg, in the county .of Allegheny and State of Pennsylvania, a citizen of the United States, have invented or discovered certain new. and. useful -Improve-' ments in Cutting-Tools, of which improvements thefollowmg is a specification.

The invention described herein relatesto certain improvements, in cutting offtools for rods, tubes, -etc., and consists generally stated in the combination ofa series of two or more cutters and means for simultaneously shiftin said, cutters radially different distances, w ereby successive cutters will project into thegarticIe a greater distance than the preceding. Each cutter operates on material at the bottom of the groove or furrow formed by the preceding cutter.

*The invention is hereinafter more fully described and claimed.

In the accompanying drawing forming a part of this specification Figure 1 is a side elevation of my improved cutting mechanism; Fi Zis a sectional view' on a laneindicated y the line IIII Fig.1; 1g. 3 is a diagrammatic view illustratlng the movement and operation of the cutters; and Fig.

4 is a similar view illustrating amodification in the manner of shifting the cutters.

In the practice of my lnvention, the annular head 1 is provided with feet 2 whereby it maybe secured to the frame of a machine such as is well known in the art having revolving heads provided withmeans for grippin the rod or pipe-to be cut.

he head is provided with radial grooves for the reception of the cutter carrying blocks 3, 3"etc., which are held with freedom of lon itudinal movement in said grooves by a cap p ate 4. The cutters 5, 5,etc., are arranged in grooves in the blocks 3 and pro-. vision is made for adjusting the cutters in the blocks, as for example by screws 6, which will shift the cutters longitudinally and set screws 7, whereby the cutters are held in their adjusted positions. It is preferred that cutters be so adjusted in their holders or blocks 3, 3 etc., that cutters successive in the direction of rotation of thepipe or rod,

. should be nearer the center of the article than thepreceding cutter. This relative adjustment of the cutters is not however essential but'desirable.

Suitable means are employed for shifting the cutters inwardly in succession, the succeeding cutters being shifted in a distance greater-than that of the preceding cutter,- proportional to thecut made by such pre-* ceding cutter and to be made by such succeedthese cutters 's shown in the drawi s and consists of a p ate 8 held in ositiori i cap plate 4- and rovided wit teeth for engagement with t e worm 9. This plate is rovidedwith a series of. slotslO, 10 etc.

or the rece tion of pins 11' on the slidin blocks 3. arranged that when the plate 8 is shifted in one direction the block 3 with its cutter will be movedinwardlyso that the cutter will bite into the rod or pipe. The slot 10 is so 'constructed and arrangedthatthe block 3 will be shifted inwardly on the movement of the plate 8 but at a-higher speed and subseuentlyto the movement of the cutter 5 so t at the cutter 5 will operate in the roove or furrow cut by the cutter 5. The the late 8for shiftin the other cutters, are simi arly proportione that each cutter .will

' begin to act subsequent to the preceding cutter and in the groove on furrow formed by v such preceding cutter.

' It will be observed that the cutters are so set in the blocks 3, 3", etc., and the latter are soshifted that the cutters are; moved in protube, 'i. e. the'edge of cutter 5 will be nearly in contact with the tube, the cutter 5' a short distance, say one thirty-second (3- 2) of an inch farther out, the cutter 5 two thirty-seconds and the cutter 5 three thirty-seconds of an inch from the tube. The cutter shifting mechanism is so constructed that the cutter. 5 is shifted first the distance necessary to make the desired out. While the first cutter is beirig shifted and performing a poring cutter; A convenient means for shifting.

e 'slotlO-is so constructed an slots in shifted their edge will have different posi-x tions relative to the perimeter'of the rod or y they gfessivelygreater distances, and in such manner that they will begin to operate succes tion'of its work, the second cutter is being shifted, but this cutter originally stands .farther from the tube, and must be shifted "not only this'distance but. also a distance 'equal to the cut made by butter 5 plus the depth of cut to be required of the tool 5.

I The cutters 5 and 5 are shifted during thesame time, the distance between their edges the depth of preceding cuts plus the depth of cuts to be made by said cutters. After all of thecutters havebeen shifted as described to cutting position, each succeeding cutter at a depth greater than the preceding cutter, the

cutter shiftingmechamsm will shift all the cutters simultaneously and an equal distance.

It is characteristic .of my improvement that the working portions of the slots 10, 10", etc., are formed on arcs of circles, the centers of which are at successively shorter distances from the axis of the head, as will be seen by reference to Fig.1, where the centers v for the arcs on which the slots are formed are indicated at l), 0,11 and .e.

If desired all the cutters may be adjusted to stand an equal distance from the tube or rod in which case the cutters must be shifted to operative position in succession, i. e. each cutter should attain operative position before the next cutter is shifted. Fig. 4 shows diagrammatically form' of slots whereby the successive movements of the cutters maybe effected. It will'be observed thatthe slots 10, 10", etc., have portions formed on arcs of circles the centers of which coincide with the axis of the head, and

that the concentric portions'increase in length in successive slots. "Wlnlethe pins 11 are in these concentric ortions, the cutters will .not be-shifted. he construction shown in tances. and the tube-and a further distance equal to Fig. 4 is racticable but is undesirable on accounto the length of the slots.

- Iclaimherein as my invention:

7 1. A cutting tool having in combination a series of cutters and means for cutters through successively greater dis 2. A cutting tool having in combination a series of-cutters and means for shifting the.

cutters" preliminarily through successively greater distances and for shifting them equallythereafter.

3. A cuttin tool having in combination a series of radia ly movable cutters and means shifting said e 45 forcausing the cutters. to bite in the same plane and in succession' on ated on.

' 4. A cutting tool having in combination a the article operhead, a series of cutters radially arranged in the head,and a plate rotatively mounted on withvmeans for shifteach successive cut-. than the preceding In testimony whereof, l'have hereunto set' my-hand.-

SIGM'UND V. HUBER.

Witnesses:

J. HERBERT BRADLEY. CnARLEs BARNETT. 

